DS1245BL-100 Equivalent & Substitute Parts

Part Overview

The DS1245BL-100 is a 1Mbit Non-Volatile SRAM (NVSRAM) memory IC manufactured by Analog Devices Inc./Maxim Integrated. This parallel interface memory device operates at 100 ns access time with 128K x 8 memory organization, designed for applications requiring non-volatile data retention combined with SRAM performance characteristics. The product is currently obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and legacy design support.

Key Parameters

Parameter	Value
Manufacturer Part Number	DS1245BL-100
Manufacturer	Analog Devices Inc./Maxim Integrated
Memory Type	Non-Volatile SRAM (NVSRAM)
Memory Size	1Mbit
Memory Organization	128K x 8
Memory Interface	Parallel
Access Time	100 ns
Write Cycle Time	100 ns
Supply Voltage	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C
Package Type	34-LPM
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the DS1245BL-100 is determined by the following critical parameters:

Memory Specifications: The substitute part must maintain identical memory type (NVSRAM), capacity (1Mbit), organization (128K x 8), and interface type (Parallel) to ensure functional compatibility at the system level.

Electrical Characteristics: Access time and write cycle time must meet or exceed the performance requirements of 100 ns. Supply voltage range must be compatible with the 4.75V ~ 5.25V specification.

Physical Compatibility: Package type and mounting configuration must align with the 34-LPM surface mount specification to ensure PCB-level compatibility without redesign.

Base Product Lineage: Substitute parts must share the DS1245 base product number, indicating they are part of the same product family and designed with cross-compatibility considerations.

The DS1245ABP-70+ meets these substitution criteria as a direct equivalent within the DS1245 product family.

Parameter Comparison

Parameter	DS1245BL-100 (Main Part)	DS1245ABP-70+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Memory Type	Non-Volatile SRAM	Non-Volatile SRAM
Memory Size	1Mbit	1Mbit
Memory Organization	128K x 8	128K x 8
Memory Interface	Parallel	Parallel
Base Product Number	DS1245BL	DS1245
Product Status	Obsolete	Obsolete
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	3 (168 Hours)
HTSUS Code	8542.32.0041	8542.32.0041

Engineering Selection Recommendations

The DS1245ABP-70+ serves as a direct functional equivalent to the DS1245BL-100 for applications requiring 1Mbit NVSRAM with parallel interface and 100 ns performance characteristics. Both parts are obsolete products from the same manufacturer family, indicating mature technology with established design documentation.

The DS1245ABP-70+ offers improved environmental compliance through ROHS3 certification, whereas the DS1245BL-100 is RoHS non-compliant. This distinction is relevant for applications subject to regulatory requirements or procurement policies mandating RoHS compliance.

Moisture sensitivity differs between the two parts: the DS1245BL-100 carries MSL 1 (unlimited moisture exposure tolerance), while the DS1245ABP-70+ carries MSL 3 (168-hour moisture exposure limit). This parameter affects storage, handling, and assembly procedures but does not impact functional performance in deployed systems.

Selection between these parts should be based on regulatory compliance requirements, supply chain availability, and handling/storage capabilities of the implementing organization.

Frequently Asked Questions (FAQ)

Q: Can DS1245ABP-70+ directly replace DS1245BL-100 in existing designs?

A: Yes. Both parts share identical memory specifications (1Mbit NVSRAM, 128K x 8 organization, parallel interface, 100 ns performance) and belong to the same DS1245 product family. Functional compatibility is established through these matching parameters.

Q: What is the significance of the different RoHS statuses?

A: The DS1245BL-100 is RoHS non-compliant, while DS1245ABP-70+ is ROHS3 compliant. This affects procurement eligibility depending on customer or regulatory requirements. RoHS compliance status does not impact electrical performance or functional operation.

Q: How do the different Moisture Sensitivity Levels affect component selection?

A: MSL 1 (DS1245BL-100) allows unlimited moisture exposure, while MSL 3 (DS1245ABP-70+) limits exposure to 168 hours. This affects storage conditions, shelf life, and assembly procedures. In deployed systems, MSL differences do not impact performance. Selection depends on organizational handling and storage capabilities.

Q: Are there package or pinout differences between these parts?

A: Both parts use 34-LPM surface mount packaging. Pinout compatibility is maintained within the DS1245 product family, ensuring direct PCB-level substitution without layout modifications.

Q: Why are both parts listed as obsolete?

A: Obsolete status indicates these products are no longer in active production. Both parts remain functionally equivalent and suitable for legacy system support and repair applications. Availability depends on distributor inventory levels.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message